--- a/handouts/ho02.tex	Mon Sep 05 12:27:04 2016 +0100
+++ b/handouts/ho02.tex	Fri Sep 16 11:07:02 2016 +0100
@@ -40,6 +40,10 @@
 
 % recent
 %http://www.secretballotatrisk.org
+%
+%Andrew Appel has a good two-part essay on securing elections.
+%https://freedom-to-tinker.com/blog/appel/security-against-election-hacking-part-1-software-independence/
+%https://freedom-to-tinker.com/blog/appel/security-against-election-hacking-part-2-cyberoffense-is-not-the-best-cyberdefense/
 
 \section*{Handout 2 (E-Voting)}